Need to Know This new episode explores history of the Second Amendment with law professor Joyce Lee Malcolm, history professor Saul Cornell and Craig Whitney, former editor of the New York Times. 8:30 p.m. KOCE

Vegas A suspect in the murder of a craps dealer at the Savoy takes Mia (Sarah Jones) hostage and demands ransom. Dennis Quaid and Jason O'Mara also in this new episode star. 9 p.m. CBS

Live From Lincoln Center Rob Fisher conducts a production of Rodgers and Hammerstein's "Carousel." 9 p.m. KOCE

Blue Bloods In this new episode Jamie (Will Estes) helps an off-duty officer who apprehended an armed robber cover up that he'd been drinking. 10 p.m. CBS

VICE In this new episode Chinese bachelors seek the help of a professional matchmaker. 11 p.m. HBO

SPECIALS

Al Madrigal: Why Is the Rabbit Crying? The comic and correspondent for "The Daily Show With Jon Stewart" offers an hour of stand-up in this new special. 11 p.m. Comedy Central